list_calendars

List all calendars available to the current user, including their supported component types (events, tasks, journals) and metadata.

SERVERAIquila — Nextcloud MCP Server SOURCEelgorro/aiquila

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aiquila-nextcloud-mcp-server/list-calendars.md

WHAT IT DOES

What list_calendars does on AIquila — Nextcloud MCP Server

AI agents call list_calendars to retrieve information from AIquila — Nextcloud MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_calendars is rated Low

This tool retrieves and queries calendar data without creating, modifying, deleting, or executing any operations. It has no side effects and presents minimal security risk—calendars and their metadata are typically user-accessible information. Low severity reflects the limited blast radius if misused by an agent.

From the tool's definition Tool name is 'list_calendars' and description states it 'List all calendars available to the current user'. The verb 'list' and the action of retrieving calendar metadata with no modification capability clearly indicate a read-only operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_calendars safely

PolicyLayer is an MCP gateway: it sits between your AI agents and AIquila — Nextcloud MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_calendars, this is the rule to start with:

list_calendars Allowed

list_calendars is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_calendars": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect AIquila — Nextcloud MCP Server, apply this rule, and every list_calendars call is checked against it from then on.

FAQ

Questions about list_calendars

What does the list_calendars tool do? +

List all calendars available to the current user, including their supported component types (events, tasks, journals) and metadata. It is categorised as a Read tool in the AIquila — Nextcloud MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_calendars? +

Register the AIquila — Nextcloud MCP Server MCP server in PolicyLayer and add a rule for list_calendars: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches AIquila — Nextcloud MCP Server. Nothing to install.

What risk level is list_calendars? +

list_calendars is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_calendars? +

Yes. Add a rate_limit block to the list_calendars rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block list_calendars completely? +

Set action: deny in the PolicyLayer policy for list_calendars. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides list_calendars? +

list_calendars is provided by the AIquila — Nextcloud MCP Server MCP server (elgorro/aiquila). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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